Police in Spain are looking for a fare dodger who bit off part of the ear of a train conductor who asked to see his ticket.
The attack happened on a suburban commuter train in Barcelona in northeastern Spain on Saturday, a police spokesman said on Monday (local time).
The suspect jumped from the train and disappeared before police arrived.
Police have created a composite sketch of the man based on descriptions from other passengers, a spokesman said.
The train conductor has undergone surgery to reconstruct his ear, a spokesman for state railway company Renfe said.